{
  "manageEntity": {
    "action": "Save",
    "entityId": "2081609012",
    "entityType": "Track",
    "nonce": "0x83bde17573d95dd5a0f234f0dd49b8c28a4e00a418ca0d4fb7625748418d05b8",
    "signature": "0x00167de4e4c423cb84684241e20747538bc793683d8b7cca0d1756ff846921f001690ef772d9a10016878622f43faf5a56d7813dc20836e0baa7af864853492a1b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}